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  TOURMALINE SLICE           NATURAL COLOR            Hardness 7.5

RETURN TO »» TOURMALINE SLICE 2

98 grs. Slice polychromatic tourmaline 

10.7 x 98 mm. (Stone found in alluvium.)

Moderately included.  Enhancement: none  (N)

stone PRICE  

 SOLD 

ORIGIN: Madagascar

   ref: Tslrg98gr   

(2 Half tourmaline slices not separated) 

 
Hardness: 7 - 7.5

Growth zoning in a tourmaline crystal.
Specific Gravity: 3.0+
Refractive Index: 1.62 - 1.68
Chemical Composition: Na(Li,Al)3Al6Si6O18(BO3)3 (OH)4, Sodium Lithium Aluminum Boro-Silicate Hydroxide
Crystal Structure: Trigonal

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